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UK SIM not working even though phone is Unlocked

Ok so I am in the UK right now for the summer. Before I left I unlocked my phone and when I got here I went and bought a pay as you go 3 SIM card since they offer all you can use data and all.
The guy at the store said to wait 20 min then call 444 to register the card. After 20 minutes or so I still had no signal on my phone. I went into settings > Wireless > Mobile > Select network and selected 3 but it said "this SIM card could not be registered on this network." Same thing if I selected automatically. So I decided to try a friends Vodaphone pay as you go card in my phone. The Vodaphone card works perfect, I can make calls, send sms, etc.
So I went back to the store the next day to see what they say. The employee put the SIM in her phone and it worked perfect, which means that there is something wrong with my phone.
I went back and decided to unroot then reroot and unlock. After encountering multiple problems with that I have finally gotten back to root and unlock but the 3 SIM card still does not work while the Vodaphone one does.
Is there anything I can do from here to get the 3 SIM to work?

What rom are you using?

sorry forgot to mention that. Right now I am on the stock rom and stock radio. I tried flashing another radio and using the SIM card on Leedroid and RCmix HD and nether of those worked.

Have you try selecting different band like EURO band (may be worth a try )

pakxelaos said:
Have you try selecting different band like EURO band (may be worth a try )
Click to expand...
Click to collapse
not exactly sure what that means, do you have a link handy, please? I am willing to try anything, as long as it does not brick my phone.

Open Phone Dialer
Dial: *#*#4636#*#*
Press Phone Information
Hit Menu
Choose Select Radio Band
Choose EURO Band
Turn on Airplane Mode for about 20 seconds and then turn it off

pakxelaos said:
Open Phone Dialer
Dial: *#*#4636#*#*
Press Phone Information
Hit Menu
Choose Select Radio Band
Choose EURO Band
Turn on Airplane Mode for about 20 seconds and then turn it off
Click to expand...
Click to collapse
No still did not work thanks though for trying. I also restarted the phone, reselected the EURO band and put on airplane mode but still nothing.
Any other suggestions?

dreshden said:
No still did not work thanks though for trying. I also restarted the phone, reselected the EURO band and put on airplane mode but still nothing.
Any other suggestions?
Click to expand...
Click to collapse
Have you tried the 3 SIM in a different phone perchance? It seems like the unlock and the Inspire are working as the Vodafone SIM worked.

I agree, maybe there's something different about that sim that the Inspire can't read it.
id10terrordfw said:
..
It seems like the unlock and the Inspire are working as the Vodafone SIM worked.
Click to expand...
Click to collapse

id10terrordfw said:
Have you tried the 3 SIM in a different phone perchance? It seems like the unlock and the Inspire are working as the Vodafone SIM worked.
Click to expand...
Click to collapse
Yes I took it back into the store to see what they would say/try to get a refund. They store employee put it into her phone and one of her coworker's phones and the it worked fine in their phones. I do know exactly what kind of phones they had since they were for sure Euro only models that I have never seen before but one of them was a Samsung with a touch screen and keyboard, much like a blackberry. Not really relevant to this, I think.
They would not give me a refund since it work in their phones. Which is why I am here stuck with a 3 SIM card and looking for help to get it fixed

Well that at least establishes where the problem is. When you boot the phone with the 3 SIM, does it give a "no sim" error, no signal at all , or no data access(voice/999 still work)?

When I first put in the sim it gives me a popup saying "Unable to detect your SIM card. Please make sure that your SIM card is properly inserted and restart the phone." It gives two options, Shut phone down and Restart. It also says this when I put the Vodaphone card back into the phone. I just have to restart the phone and I will have signal when I have the Vodaphone card in.
So I click restart. After it reboots, I have no signal (grayed out bars with a small 'x' above them). In my notification tray I have 2 new notifications. One saying that my SIM card has changed and another saying there is a sign in error to my gmail account.
If I click on the "SIM car changed" notification it gives me a pop up saying "You have insterted a new SIM card. Your phone will change the following settings according to your SIM card: bookmarks, shortcuts, wallpapers, ringtones, language selections, and input settings. Are you sure you want to replaces these settings on your phone?" Then it gives me 3 options, "Yes" "No, later" and "No."
I do not get any other notifications or error messages after a restart.

Backup your ROM then try flashing cm7 and see what happens, with the 3 SIM in the phone.
Sent from my HTC Inspire 4G using XDA Premium App

Ok I wiped everything and installed nightly #77 with the 3 SIM card in the phone the whole time. It has been 2 hours and I have not taken out the card yet and it is still not receiving service. So I have no idea where to go from here.
If there is nothing else I guess I will just have to suck it up and go spend some more pounds and get a Vodaphone card for myself.
Thanks for the help and if there is anything else you can think of for me to try please, I am open to all suggestions!

dreshden said:
Ok I wiped everything and installed nightly #77 with the 3 SIM card in the phone the whole time. It has been 2 hours and I have not taken out the card yet and it is still not receiving service. So I have no idea where to go from here.
If there is nothing else I guess I will just have to suck it up and go spend some more pounds and get a Vodaphone card for myself.
Thanks for the help and if there is anything else you can think of for me to try please, I am open to all suggestions!
Click to expand...
Click to collapse
If they won't swap it out for you than I would say that is the best bet. I know for a fact that cm7 supports 3. There has to be some other factor affecting it. Did you have the 3 guys try their SIM cards in your phone?
Sent from my HTC Inspire 4G using XDA Premium App

No they did not, that is the only thing. They never put their card into my phone.
*sigh* I was really hoping for unlimited data because that would have been soooo helpful to be able to use maps while wandering the city. I guess this just was not meant to be.
Thank you so much for all the help! I really appreciate it!

no signal bars...

I bought a skyrocket and it was locked. then I got the unlock code, it got accepted then once I rebooted the phone it shows the roung circle with a slash in it, no signal bars. I reset the phone and anything but it still shows no bars...any idea what might the problem be ?

dasistsparta said:
I bought a skyrocket and it was locked. then I got the unlock code, it got accepted then once I rebooted the phone it shows the roung circle with a slash in it, no signal bars. I reset the phone and anything but it still shows no bars...any idea what might the problem be ?
Click to expand...
Click to collapse
Did you set up an APN?

Can you provide more details?
-android version, stock gb, ics, cm9 ect
-have you tried anything else (ie airplane mode)
-apn missing?
There can be a host of issues but with the right key we can get you in the correct direction.

it is all stock. i tried resetting, pulling battery, airplane on/off and still nothing. it worked for a moment when I put the unlock code but when i reboot the phone it stopped showing bars. and i cannot set the apn setting because it says instert sim card...

dasistsparta said:
it is all stock. i tried resetting, pulling battery, airplane on/off and still nothing. it worked for a moment when I put the unlock code but when i reboot the phone it stopped showing bars. and i cannot set the apn setting because it says instert sim card...
Click to expand...
Click to collapse
Did you take the sim card out? The sim needs to be in to be used on mobile networks.
-or is the sim inserted but still cannot set apn?
-cannot access apn menu or apn settings are blank or missing?

dac1227 said:
Did you take the sim card out? The sim needs to be in to be used on mobile networks.
-or is the sim inserted but still cannot set apn?
-cannot access apn menu or apn settings are blank or missing?
Click to expand...
Click to collapse
Of course the sim is inside and when i go to set apn settings i cannot even emter to modify apn settings because it says insert sim card but the sim is inserted. K also made sure the phone is not blacklisted so that cant be the case. Would rooting and flashing a tmobile radio fix the issue or is bettet just togoto att store and swap it for a new phone?

I didn't realize this was a new phone. Are you going to use it on T-mobile?
In that case, you could try to flash a t mobile radio or t mobile rom. Wonder if the att firmware is regretting the tmobile sim.
having it unlocked seems to trump having to do it all that though....
I'm going to have to do my own research on this. Did you buy code from somewhere b/c i thought att wouldn't provide the codes as I read earlier..... Anyone else have ideas?

dasistsparta said:
Of course the sim is inside and when i go to set apn settings i cannot even emter to modify apn settings because it says insert sim card but the sim is inserted. K also made sure the phone is not blacklisted so that cant be the case. Would rooting and flashing a tmobile radio fix the issue or is bettet just togoto att store and swap it for a new phone?
Click to expand...
Click to collapse
You might not need to swap it for a new phone. It might be the sim card is either defective, or there's an issue with the carrier. Did you call the carrier & make sure that the account is set up? I know that these suggestions are obvious, but you often overlook the most obvious.
Sent from, The Eclectic Chair.

I bought the phone on craiglist and i got the code from cellunlocker.net for $24.99. the phone is not brand new, but i know it has 1 year warranty so it still is covered. trying to use it with tmobile. will try call them and see if resetting some stuff might help. and the sim has no issues because it works on other phones.

On her stock att sgsII i can view the apns but not edit them. have you tried accessing them with an att sim card? If you can with the att sim that may tell us something. Also there is a general thread on using the SR on T-mobile, anything in there?
---------- Post added at 10:42 PM ---------- Previous post was at 10:32 PM ----------
have you seen this yet? http://forum.xda-developers.com/showpost.php?p=28208550&postcount=8
Trying to keep the ball rolling until someone more knowledgeable steps in or we solve it. but the ime # and unlock code correlation has me thinking...

G955F not registered on network

Can't find a fix to this anywhere
I can't make any calls or connect to 4G. So far I've tried resetting network settings, triple checking my APN settings, I've even got a new sim card but still nothing.
When I make a call it says 'not registered on network'
It won't even let me automatically connect in network operators.
I've even done a full factory reset but that didn't work either
Last week the phone worked fine but now the only thing that works on it is WiFi
Anyone know how to fix?

Where is the phone from?

Not sure too be honest. I bought it on eBay about 6 months ago. It's worked perfectly fine up until now.
Don't understand how it just stopped working. I've even updated it to the latest official firmware.

go to settings --> apps---> show the system apps and go to phone app and clear data of it
go to sim toolkit then and clear the data too if there are more then 1 then do it for all and try to reboot
if that doesnt work
type *#06# and check if u see ur imei
if u dont see it ur ****d up ur efs

Thanks for your reply
It didn't work though. I cleared the data on 3 of the phone apps data & 2 of the sim toolkit.
My imei does show when doing *#06#
When I restart the phone I just get a ? symbol top right. It eventually disappears and I have 2 bars signal but I still can't make any calls, texts or have 4G though
Just to confirm it IS my phone causing the problem as my sim card works fine in my wife's s8 plus. It's not the sim tray either causing the problem as I've tried hers with the same result

Anyone?
I'm desperate for a fix

Many many thanks for all your amazing help ?????????????????

mike710_0 said:
Many many thanks for all your amazing help ?
Click to expand...
Click to collapse
I have problem with other network sim having very very low signal ? on 2 of the networks my phone is unlocked working....
Your issue resolved?

Laleka said:
I have problem with other network sim having very very low signal on 2 of the networks my phone is unlocked working....
Your issue resolved?
Click to expand...
Click to collapse
No was it ****e! I was being sarcastic ?

Check if your IMEI is not blacklisted.

Found out it is blacklisted!
Anyone recommend going here
http://imeirescue.com

mike710_0 said:
Found out it is blacklisted!
Anyone recommend going here
http://imeirescue.com
Click to expand...
Click to collapse
I am in the same situation. Blacklisted phone. Could clean my imei via an ebay service but phone still wont connect to any network. Did you find a solution ?

bilou972 said:
I am in the same situation. Blacklisted phone. Could clean my imei via an ebay service but phone still wont connect to any network. Did you find a solution ?
Click to expand...
Click to collapse
On what network was this phone previously used. The best thing to do is to contact the carrier and try to fix it with them

My understanding is IMEI blacklisted is usually when phone has been reported stolen, it's intended to render the phone unusable on any phone network.

Same
I have the same problem, is there anybody here can help me? Wipe data: done, reintall stock firmware: done, device info app installed and shows sim infomation with signal strength-141 Type lte, but, cell identity 0, lac 0, psc 0.
Wifi It's all right.

No signal, No network connection and Airplane mode is stuck ON?

Samsung Galaxy S7 UNLOCKED (I bought it unlocked from an AT&T supplier) g930u
just randomly went to use my phone only to find I cannot. Only wifi. Airplane mode won't ever turn off (completely?).
Yes, I have tried to RESET EVERYTHING.
I searched for help all day. To no avail. Only thing I can think of now is to throw the phone in the trash or flash a new rom? Yes, I even tried this https://forum.xda-developers.com/showpost.php?p=41777704&postcount=50
Apparently I don't actually have wifi calling, but when I disconnect from wifi-it shows wifi calling but won't let me change it? WTF is that? (screen shot below)

All symptoms still point to be carrier locked to me, either that or your SIM card is broken. That little cross symbol next your alarm is when no SIM is detected, or it's not a supported SIM.
SIM works in another phone? If you boot into download mode what model does it say it is, they didn't accidentally sell you a G930A?

Beanvee7 said:
All symptoms still point to be carrier locked to me, either that or your SIM card is broken. That little cross symbol next your alarm is when no SIM is detected, or it's not a supported SIM.
SIM works in another phone? If you boot into download mode what model does it say it is, they didn't accidentally sell you a G930A?
Click to expand...
Click to collapse
I was wondering if it could be that. I have another Sim Card for another carrier I can try, I was waiting to make sure it was not the phone before I tried it. (It effectively switches my phone service once i activate it -which is why i was waiting)
Download mode confirms it is a G930U

Question eSIM Broken, Sim Manager Screen Frozen, Unable to remove eSIM

Hi all, currently having an issue with my phone which I am unable to resolve. I'm beginning to think I may have completely broken my phone.
Yesterday I decided to install a Lycamobile eSIM on my phone. In doing so, it has broken SIM manager and also caused my device to stop recognising my physical SIM (which is with EE).
I've attached a photo of the issue. Here's what happens.
When I enter SIM Manager, the loading animation continues for quite a while. As you can see, the eSIM has no phone number assigned to it, and my physical SIM, which is inserted in SIM slot 1, is not recognised.
Whenever the loading animation decides to stop, er, loading, I access the eSIM. When I click to remove the eSIM nothing happens.
If I scroll down and go into More SIM settings and click to Remove all eSIMs, nothing happens.
I was on the phone to EE today for about an hour and a half. In that time, they tried to get me to install an eSIM but it didn't work. Every time I try to install it, the screen simply vanishes, taking me back to SIM manager.
After exhausting my options with EE, they referred me to Samsung. Samsung told me to contact Lycamobile, who in turn have decided to send me a new QR code in order to install a new eSIM...which also did not work.
I have reset network settings. I have cleared the cache partition. I have factory reset the phone twice. I read that apparently you should get the option to remove an eSIM when you factory reset, but I'm not sure if that applies to Samsung phones and that option has never been available to me. I did contemplate flashing the firmware (it has been many a year since I did that), but it appears that this wouldn't resolve the issue.
I'm stumped. The phone is in warranty, so I suppose I could send it back to Samsung, but unsure if and how they would be able to sort it.
Any advice would be hugely appreciated.

Try this: put a sim card in the 2nd slot and then try removing the eSIM.

TheMystic said:
Try this: put a sim card in the 2nd slot and then try removing the eSIM.
Click to expand...
Click to collapse
Unfortunately the physical SIM is still not recognised in slot two, and I am still unable to remove the eSIM. As I said, whenever I access the eSIM and press Remove it doesn't work.

Have the same problem. Trying to fix it for a second day now.
What I tried so far:
Factory reset
Clear cache
Tried to remove it - nothing
Reset network settings
Reinserting sims in different variations
Checked physical sim in different phone - which works
Tried to reflash it with Odin, esim still there
Has anyone got some different ideas of what to do?
Thanks

THMRK1 said:
Unfortunately the physical SIM is still not recognised in slot two, and I am still unable to remove the eSIM. As I said, whenever I access the eSIM and press Remove it doesn't work.
Click to expand...
Click to collapse
If a factory reset doesn't fix a problem, then it means a bug in the software. This is unacceptable bug. You should try getting a replacement under warranty.

I'm assuming phone is unlocked. Any particular reason you are using EE firmware? I would try, via Odin, unbranded firmware

Samsung punted me back to EE and sent me a repair centre. They managed to fix it. According to the repair notes they replaced some hardware:
"Replaced a part that holds internal parts in place."
"Replaced an internal flex component."
"Replaced the main board (?!) inside your device."
They also flashed some firmware, which they say on the repair note was "the latest version" but I got a security update download notification as soon as the phone was setup.
This was done at a same day repair centre and I got the phone back after a couple of hours, which was unexpected.

raul6 said:
I'm assuming phone is unlocked. Any particular reason you are using EE firmware? I would try, via Odin, unbranded firmware
Click to expand...
Click to collapse
To answer this question: EE are my network provider, and thus is a contract phone. The phone is unlocked though, EE did confirm that to me. I would have flashed firmware as a last resort but was keen to explore every other solution first. In the end, EE did manage to fix it by replacing some internal components (detailed in the post above).

THMRK1 said:
To answer this question: EE are my network provider, and thus is a contract phone. The phone is unlocked though, EE did confirm that to me. I would have flashed firmware as a last resort but was keen to explore every other solution first. In the end, EE did manage to fix it by replacing some internal components (detailed in the post above).
Click to expand...
Click to collapse
Great! All well then

Sorry to bring up an older topic but is there any other suggestions to get this solved. I've got the exact same issue caused by a Lycamobile SIM. I've sent my phone back to Samsung but they won't repair under warranty because of minor cosmetic damage and I don't want to pay for an expensive repair for something that seems like it's a software issue.